A force of 112 N acts on 35 kg box which moves at a steady speed across the floor. The force is directed 40 degrees above the ground.

How to state Newton's second law using x components and y components?

x: -Fa(cos40) -Ff=ma and y: -Fa(sin40)+Fn-Fg=0?

How do you calculate force of friction and normal force from this information?

How do you find the force the box is acting on the floor (magnitude and direction)?

I really really need help with this